ESG Report 2019

AIR PURIFICATION ORGANIC EXHAUST GAS TREATMENT PROJECT – Inner Mongolia Company needs to use some production plants, the process of volatile organic solvents in the production "condensate recovery + activated carbon process, including butyl acetate, acetone and adsorption" was originally installed to treat ethyl acetate. During the production process, exhaust gas. However, the process involves a very small part of the volatile organic organic solvents adsorbed on activated solvents will be emitted to the surrounding carbon that cannot be recycled, waste atmosphere, affecting air quality. In order to activated carbon that is easily volatilized effectively reduce the impacts of the volatile under saturation, activated carbon that organic matter on the environment, Inner requires frequent replacement, poor safety, Mongolia Company has configured exhaust and other issues. gas treatment facilities in each project. In BACKGROUND Inner Mongolia Company continued to carry In addition, Inner Mongolia Company built a out environmental improvement work during secondary alkali spray tower on the base of the Year to introduce a set of butyl acetate the original alkali spray tower to enhance the exhaust gas activated carbon adsorption efficiency of dust treatment. The dust regeneration device, an acetone exhaust gas generated in the production plants needs to activated carbon adsorption regeneration be processed through the low-efficiency non- device and an ethyl acetate exhaust gas woven fabric filter, medium-efficiency activated carbon adsorption device in relevant chemical fibre non-glue cotton material filter, production plants. The regeneration devices and the new alkali spray tower to further can recycle the volatile organic solvent prevent pollution to the surrounding adsorbed in the activated carbon, and at the atmosphere. same time reduce the loss caused by volatilization. PROJECT STATUS OBJECTIVES AND EFFECTIVENESS Three sets of organic exhaust gas exhaust gas, the economic benefits treatment facilities reduce the impacts of generated are expected to be RMB1 million volatile organic compounds on the per year. environment and solve the problems of the The newly built secondary alkali spray original waste gas treatment facilities. The tower is connected in parallel with the condensate recovery and activated carbon original alkali spray tower system to form recovery devices adopted in the organic two secondary alkali spray towers, which exhaust gas treatment project can recover effectively increases the collection and up to 90% of the volatile organic matter, treatment rate of exhaust gas. The current and the recycled butyl acetate, acetone dust treatment efficiency is as high as 95%. and ethyl acetate can be applied for production. While treating volatile organic 57 Environmental, Social and Governance Report 2019 The United Laboratories International Holdings Limited